The thing with adverts on mobile, where the ad block hasn't worked for ages now, is I can always block them by putting the phone down for 20 seconds (or whatever length the advert is). Having to do this for an un-skippable 20 second ad for one minute video, however, makes me press the back button. That said, the new plays-even-if-you-can't-see-them ad-block-proof ads on desktop are annoying to the point I'm consideri…
You can also install NewPipe or NewPipe with SponsorBlock.